The Foreign Office should have intervened to stop Mandelson's deeply flawed appointment | Richard Dearlove

"The primary qualification for holding a DV is integrity, honesty and transparency in one's personal and professional life. To lie about or hide potential vulnerabilities is an immediate disqualification."

"The role of British ambassador in Washington is one of those posts. It sits across a number of highly classified compartments and involves access to sensitive domains."

"Recent British ambassadors to the US have been professional diplomats. They would have been fully accustomed to the discipline of the DV process."

The UK's national security infrastructure requires a developed vetting certificate for access to restricted compartments. Integrity, honesty, and transparency are crucial for obtaining DV clearance. Individuals who do not meet these standards are barred from sensitive positions, including the role of British ambassador in Washington. This position involves access to highly classified information, including the UK's nuclear deterrent and intelligence relationships. Recent ambassadors have been professional diplomats familiar with the DV process, which includes personal interviews and background checks conducted by experienced vetting teams.

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